<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title>密码输入框</title>
	</head>
	<body>
		<form action="form.php" method="post">
			请输入内容：
			<input name="pwd" type="password" maxlength="16"/>
		</form>
	</body>
</html>